Like the look of the ones on the right, especially so the upper right:
LOTS of sources out there. One of the better (cheaper) ones is eBay. For instance these work quite fine:
http://www.ebay.com/itm/80-8mm-Silv...752?pt=LH_DefaultDomain_0&hash=item4ab1c5c368
And I kinda like these off-center pupil jobs:
From:
http://www.barlowstackle.com/Look-Around-3-D-Holographic-Eyes-P2206C38.aspx
Wish those last ones came in a slightly larger size. But methinks if the eyes on the plug are looking BACK at the fish when it approaches, that might add that little
something extra to induce the strike.
It's all experimentation. Don't be afraid to try anything you think might work! Then, simply let the fish decide, they
WILL let you know what they like!
Cheers,
Nog